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CVE-2026-39031

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Lansweeper lsencrypt是比利时Lansweeper公司的一款敏感信息检索与渗透测试辅助工具。 Lansweeper lsencrypt存在安全漏洞，该漏洞源于使用硬编码142字节静态密钥数组的RC4加密，8字符前缀以明文存储，允许具有本地访问权限的攻击者仅通过单次SHA-1哈希和RC4解密操作恢复任何加密密码。

AI Predicted 7.5 Difficulty: Easy EPSS 0.09% · P0

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-39031

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Lansweeper lsrunase 2.0 and lsencrypt 2.0 use RC4 encryption with a hardcoded 142-byte static key array to encrypt credentials. An 8-character prefix is stored in cleartext alongside the ciphertext. This allows an attacker with local access to recover any encrypted password to plaintext using a single SHA-1 hash and RC4 decryption operation, with no brute force required.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Lansweeper lsencrypt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lansweeper lsencrypt是比利时Lansweeper公司的一款敏感信息检索与渗透测试辅助工具。 Lansweeper lsencrypt存在安全漏洞，该漏洞源于使用硬编码142字节静态密钥数组的RC4加密，8字符前缀以明文存储，允许具有本地访问权限的攻击者仅通过单次SHA-1哈希和RC4解密操作恢复任何加密密码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2026-39031

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-39031

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Proof of Concept for CVE-2026-39031 (1)

Other References for CVE-2026-39031 (1)

Same Patch Batch · n/a · 2026-06-26 · 12 CVEs total

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CVE-2026-36908 axiomatic-systems Bento4 安全漏洞
CVE-2026-36907 axiomatic-systems Bento4 安全漏洞
CVE-2026-36478 Technitium DNS Server 安全漏洞
CVE-2026-38641 redox-os relibc 安全漏洞
CVE-2026-38639 redox-os relibc 拒绝服务漏洞
CVE-2026-38571 Tenda N300 F3 安全漏洞
CVE-2026-50765 Koha Library Management System 安全漏洞
CVE-2026-50767 Koha Library Management System 安全漏洞
CVE-2026-50766 Koha Library Management System 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2026-39031

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